Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «Q»:

QuiescentQuiescent: Marked by a state of inactivity, repose, or tranquillity. For example, a quiescent stem cell is a stem cell that is resting at the time but that might be stimulated later to divide and proliferate.
Quiescent also means causing no trouble or symptoms. For example, a case of leukemia may ...

QuinacrineQuinacrine: An antimalarial drug and, in cytogenetics, a fluorescent dye used to stain chromosomes. The Y chromosome stains brilliantly with quinacrine....

Quincke's diseaseQuincke's disease:
This is angioneurotic edema (or angioedema), a form of localized swelling of the deeper layers of the skin and fatty tissues beneath the skin. Hereditary angioneurotic edema (or hereditary angioedema) is a genetic form of angioedema. Persons with it are born lacking an inhibitor ...

QuinineQuinine: The original antimalarial agent, quinine took its name from the Peruvian Indian word "kina" meaning "bark of the tree" referring to the cinchona tree. From this tree, quinine was first obtained. The Peruvian Indians called it "the fever tree."
Quinine, a large and complex molecule, is the ...

QuinquagenarianQuinquagenarian: Someone in his or her fifties. See also: Age by decade....

QuinsyQuinsy: Not a TV detective but an old word for a
peritonsillar abscess.
Whether you call it quinsy or a peritonsillar abscess, it is a
collection
of pus (an abscess) behind the tonsils that pushes one of the tonsils
toward the uvula (the prominent soft tissue
dangling from the back of
the pal...

Quintan feverQuintan fever: Quintan means recurring every 5
days, the characteristic duration of trench fever.
Quintan or trench fever is a disease borne by body lice that
was first recognized in the trenches of World War I, when it is
estimated to have affected more than a million people in Russia and
on ...

QuintoxQuintox: Trade name of the insecticide dieldrin. See: Aldrin and dieldrin....

QuotidianQuotidian: Recurring each day, as in a fever that
returns every
day. From the Latin "quotidianus" meaning "daily." (In French, the
noun "quotidien" is a daily
newspaper)....

QuotientQuotient: The result of mathematical division. The I.Q.
(Intelligence Quotient) is arrived at by dividing the person's mental age (as determined
on the Binet test) by the person's chronologic age and multiplying by 100. So if a child
scores at the 8-year old level but is only 6, the I.Q. is 8/6 X 10...